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Spontaneous generation of a swirling plume in a stratified ambient

Author
Marques, F.; Lopez, J.M.
Type of activity
Journal article
Journal
Journal of fluid mechanics
Date of publication
2014-12-01
Volume
761
First page
443
Last page
463
DOI
https://doi.org/10.1017/jfm.2014.628 Open in new window
Repository
http://hdl.handle.net/2117/27537 Open in new window
Abstract
The transition from laminar to complex spatio-temporal dynamics of plumes due to a localized buoyancy source is studied numerically. Several experiments have reported that this transition is sensitive to external perturbations. Therefore, a well-controlled set-up has been chosen for our numerical study, consisting of a localized heat source at the bottom of an enclosed cylinder whose sidewall is maintained at a fixed temperature which varies linearly up the wall. Restricting the dynamics to the ...
Citation
Marques, F.; Lopez, J.M. Spontaneous generation of a swirling plume in a stratified ambient. "Journal of fluid mechanics", 01 Desembre 2014, vol. 761, p. 443-463.
Keywords
Columnar vortices, Dust devils, Enclosures, Gluing bifurcation, Instability, Natural-convection, Nonlinear dynamics, Number termal-convection, Symmetry-breaking, Taylor-Couette flow, nonlinear instability, plumes/thermals, stratified flows
Group of research
DF - Dinàmica de Fluids: formació d'estructures i aplicacions geofísiques

Participants